thermionic tube

常见例句

A high-resistance wire or ribbon forming the cathode in some thermionic tubes.
丝极在一些电子管中形成阴极的高电阻的金属丝或金属带
a thermionic tube having five electrodes.
有五个电极的热离子管。
a thermionic tube having four electrodes.
有四个电极的热离子管。
a thermionic tube having three electrodes.
有三个电极的热离子管。
A high - resistance wire or ribbon forming the cathode in some thermionic tubes.
丝极在一些电子管中形成阴极的高电阻的金属丝或金属带
a thermionic tube having two electrodes;
有两个电极的热离子管；